Vernon-Harcourt, L. F. Achievements in engineering. N. Y., Scribner, 1891.
Ward, T. H. editor, Reign of Queen Victoria. London, 1887, 2 vol.
Waterston, William. Cyclopedia of commerce. London, 1847.
Weeden, W. B. Economic and social history of New England. Boston, Houghton, 1890, 2 vol.
Wells, David A. Our merchant marine. N. Y., Putnam, 1890.
Wells, David A. Recent economic changes. N. Y., Appleton, 1898.
Williams, Ernest E. “Made in Germany,” 5 ed., London, 1897.
Wilson, A. J. Resources of modern countries. London, 1878, 2 vol.
Wright, Carroll D. Industrial evolution of the U.S. N. Y., Scribner, 1895.
Zimmern, Helen. The Hansa towns. N. Y., Putnam, 1889.